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Tracking Polar Bears | The Great Polar Bear Feast

Scientists go up in a helicopter and take down a polar bear with tranquilizers in order to record its weight, take some blood samples, and put on a collar that has GPS tracking. All this data gives scientists a wealth of information to study the polar bears in their changing habitat. It is important to see where the bears live, what they do in different seasons, their behavior, the time they spend swimming, and what they hunt.